Locomotive reversing device.



B. B. MCENIIRE.

LOCOMUTIVE REVERSING DEVICE.

APPLICATION FILED Fia. 6. |918.

Fateutd Jau. 7,1919.

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is in such position' that communication between the pneumatic chamberand the hydraulic chamber 22 is attained. The valve 29 is provided withexhaust ports or pas* sages 36 and 37. The exhaust port or passage 36 isdesigned to exhaust the air from the chamber 23 while the port orpassage is designed to exhaust the air from the chainber'22, itdepending on the position of the valve. The circular disk or plate 34 isprovided with openings 38 and 39, with which the passages or ports 36and 37 register so that the air may exhaust to the atmosphere. Risingupwardly from the partition or bottom 2O on opposite sides of thebearing 28 are fianges or walls 40, to cover one or the other of theports or passages 36 and 37 when out of communication with therespectivechaniber. A pipe 41 communicates the chamber 22 with thechamber 42 of the cyl inder 7, and ,this pipe is provided with a l valve43 having an voperating arm 44. A

pipe 45 extends from the chamber 23 and communicates with the other endof the cylinder chamber 42. This pipev45 has a valve 46, which isprovided with an operat ing arm 47. Secured by a key or feather -48 onan extension 49 of the valve 29 is a lever 50, and connected to the arm51 as at 52 is a pair of links 53 and 54. vThe link 53 is connected tothe arm 44 as at 55 and the link 54 is connected to the arm 47 as at 56.The lower extremity of the arm 51 has a pin 57, which plays in the slot58 of the link 59, which is pivoted at 60 to an arm 6l of a collar 62,which is adjustably secured onthe piston rod 13 by means of the bolt orset screw 63. The upper arm 64 of the lever 50 has connected to it a rod65. This rod 65 may be manually reciprocated, or may be operated by alever (not shown). Suitable straining means 66 are provided in thechambers 22 and 23 for covering the exhaust ports and the intake port orpassage 35, which is transversely of the valve. The cylinder chamber 42is supplied with any suitable hydraulic means to the extent shown in thedrawings, and air under pressure is admitted through the pipe 26 intothe chainber 24, and in this case the air will pass lthrough the port orpassage 35 into the chamber 22, through the pipe 41 (the valve 43 havingbeen opened) so as to force the hydraulic medium against the piston 8,operating the piston 8 to the position shown i* in F ig. 2, therebyoperating the link motion mechanism so'that the locomotive is capable oftraveling straight ahead. vAfter so opcrating the link motion mechanism,the rod 65 is reciprocated so as to position the valve 29 in a neutralposition, in which case the intake port or passage 35 and the exhaust'ports 36 and 37, and the valves 43 and 46 are'closed. Inlcrder toreverse, theprod 65 is reciprocated so as to rock the-valve 29,

whereby the port oi passage 35 will coinmunicatc with the chamber 23. Inrthis case air under pressure will enter the chamber 23, and passthrough the pipe 45 (the valve 46 having been opened) and into thepiston cylinder 42, forcing the hydraulic medium against the piston,reciprocating the saine, and through the piston rod and link or pit man3, the link motion mechanism will be reversed. ln this operation the airpreviously used in the chamber 22 will exhaust out through the port 37.

rlhe invention having been set forth what is claimed as new andiisefi1l`isz- 1. In combination with a link motion, :i reversing device,tor actuating the shifting lever of said link n'iotioinsaid. reversingdevice comprising a hydraulic cylinder, a piston reciprocating thereinand having a. rod connected with the shifting lever oi the link motion,ay chest on the cylinder having hydraulic chambers and a super-imposedpneumatic chamber, pipes of communication bctween said hydraulicchambers of the chest and the ends of thc hydraulic cylinder, said pipesof communication having valves, an oscillating cylinder -alve mounted ina bearing ot' the chest and having a port adapted, when the cylindervalveis oscillated, to put either of the hydraulic chambers incommunication with the pneumatic chamber, whereby air may operate on thehydraulic means in either end of thehydraulic cylinder for reciprocatingthe piston, whereby the shiftingr lever oi'" the link motion may beactuated, said cylinder valve having exhaust ports for exhausting theair from either of the hydraulic clianibcrs ot the chest, andconnections between the cylinder valve and the valves of' the pipes otcommunication for reversing said valves.

2. The combination with :i link motion, ot a reversing device forshitting the lever of said link motion said reversing device coinprisinga hydraulic cylinder, a` piston i'ecip rocating therein and having iirod connected with the shifting lever of the link motion, a chest onsaid cylinder having hydraulic chambers land a super-imposed pneumaticchamber, pipes of communication between said hydraulic chambers of thechest and. the ends of the hydraulic cylinder, valves iii said pipes, anoscillating cylinder valve in a bearing of the chest, said cylindervalve having a port adapted to put either of' the hydraulic chambers incommunication with the pneumatic chamber, whereby an` may operate on thehydraulic means for torcing it into the hydraulic cylinder to operatethe piston, whereby the shifting lever of the link motion may beactuated,` a straining means in each of the hydraulic chambers forstraining the pneumatic means. said cylindci' valvc having exhaust portsfor exhausting air from either of the hydraulic chambers ot seid valves,

the chest, and lever and link connections be 'tween the cylinder valveand the valves of the pipes ofcommunication for reversing said lever andlink connections being connected with the piston rod of the piston.

ln testimony whereof I have signed my name to this speeieatonin thepresence of tWo subscribing Witnesses.

V BARNIE 1B. MCENTIRE.

Witnesses:

W. M. LITTLETON, S. F. COOGLER.

